JPMorgan Federal Money Market Fund Performance Management - Capital Shares [Member] - JPMorgan Federal Money Market Fund |
Feb. 28, 2026 |
|---|---|
| Prospectus [Line Items] | |
| Bar Chart and Performance Table [Heading] | <span style="color:#000000;font-family:Arial Narrow;font-size:11pt;font-weight:bold;">The Fund’s Past Performance</span> |
| Performance Narrative [Text Block] | This section provides some indication of the risks of investing in the Fund. Because Capital Shares have not yet commenced operations as of the date of this prospectus, the bar chart shows how the performance of the Fund’s Institutional Class Shares (which are not offered in this prospectus) has varied from year to year for the past ten calendar years. The table shows the average annual total returns over the past one year, five years and ten years.Returns for Capital Shares would be similar to the returns shown because the shares are invested in the same portfolio of securities and the returns would differ only to the extent that the classes do not have the same expenses.To obtain current yield information call 1-800-766-7722. Past performance is not necessarily an indication of how the Fund will perform in the future. |
| Performance Past Does Not Indicate Future [Text] | <span style="color:#000000;font-family:Arial Narrow;font-size:10pt;">Past </span><span style="color:#000000;font-family:Arial Narrow;font-size:10pt;">performance is not necessarily an indication of how the Fund will perform in the future.</span> |
| Performance Information Illustrates Variability of Returns [Text] | <span style="color:#000000;font-family:Arial Narrow;font-size:10pt;"> the bar chart </span><span style="color:#000000;font-family:Arial Narrow;font-size:10pt;">shows how the performance of the Fund’s Institutional Class Shares (which are not offered in this prospectus) has varied from year to year for the past ten calendar years. The table shows the average annual total returns over the past one year, five years and ten years.</span> |
| Performance One Year or Less [Text] | <span style="color:#000000;font-family:Arial Narrow;font-size:10pt;">Because Capital Shares have not yet commenced </span><span style="color:#000000;font-family:Arial Narrow;font-size:10pt;">operations as of the date of this prospectus,</span> |
| Bar Chart, Returns for Class Not Offered in Prospectus [Text] | <span style="color:#000000;font-family:Arial Narrow;font-size:10pt;">Returns for Capital Shares would be similar to the returns shown because the shares are invested in the same portfolio of securities and the returns would differ only to the extent that the classes do not have the same expenses.</span> |
| Bar Chart [Heading] | <span style="color:#FFFFFF;font-family:Arial Narrow;font-size:10pt;font-weight:bold;margin-left:0.0pt;">YEAR-BY-YEAR RETURNS — INSTITUTIONAL </span><span style="color:#FFFFFF;font-family:Arial Narrow;font-size:10pt;font-weight:bold;margin-left:0.0pt;">CLASS SHARES</span> |
| Bar Chart Closing [Text Block] | Best Quarter1.32%Worst Quarter1Q, 2Q, 3Q and 4Q 20210.00%The Fund’s year-to-date total returnthrough3/31/26was0.87%. |
| Performance Table Heading | <span style="color:#FFFFFF;font-family:Arial Narrow;font-size:11pt;font-weight:bold;margin-left:0.0pt;">AVERAGE ANNUAL TOTAL RETURNS</span><span style="color:#FFFFFF;font-family:Arial Narrow;font-size:8pt;font-weight:bold;margin-left:0.0pt;">(For periods ended December 31, 2025)</span> |
| Performance Availability Phone [Text] | <span style="color:#000000;font-family:Arial Narrow;font-size:10pt;">1-800-766-7722</span> |
| Institutional | |
| Prospectus [Line Items] | |
| Year to Date Return, Label [Optional Text] | <span style="font-family:Arial Narrow;font-size:9pt;margin-left:0.0pt;">The Fund’s year-to-date total return</span> |
| Bar Chart, Year to Date Return | 0.87% |
| Bar Chart, Year to Date Return, Date | Mar. 31, 2026 |
| Highest Quarterly Return, Label [Optional Text] | <span style="font-family:Arial Narrow;font-size:9pt;font-weight:bold;margin-left:0.0pt;">Best Quarter</span> |
| Highest Quarterly Return | 1.32% |
| Highest Quarterly Return, Date | Dec. 31, 2023 |
| Lowest Quarterly Return, Label [Optional Text] | <span style="font-family:Arial Narrow;font-size:9pt;font-weight:bold;margin-left:0.0pt;">Worst Quarter</span> |
| Lowest Quarterly Return | none |
| Lowest Quarterly Return, Date | Mar. 31, 2022 |